NCBI BLAST+

Service Retirement

We remind you that it is not long until the EBI's Wise2DBA and Promoterwise services are retired on 15th April 2018. Alternatives can be found at Exonerate, BWA or BLAT. If you have any concerns, please contact us via support.

Nucleotide Similarity Search

The emphasis of this tool is to find regions of sequence similarity, which will yield functional and evolutionary clues about the structure and function of your novel sequence.

New megablast feature: If you want to perform fast searches for very similar sequences try setting the task option to 'megablast'.